“tracking and observation”的概念、定义、翻译、参考文献-科学参考

单词	tracking and observation
释义	tracking and observation Encyclopedia 历史学博物馆公共服务释 tracking and observation观众行为观察法观察者根据研究需要，利用眼睛、耳朵等感觉器官和其他技术手段或仪器，有目的地对博物馆观众进行考察，获得有关观众行为的资料。
随便看	nitrogen and phosphorus interception from pasturage nitrogenase nitrogenated fuel nitrogen balance nitrogen balance index nitrogen branch nitrogen-containing flavor nitrogen-containing organic compounds nitrogen cycle nitrogen cycling nitrogen deposition nitrogen deposition experiment nitrogen dioxide nitrogen dioxide photolysis nitrogen dioxide pollution nitrogen fertilizer nitrogen fixation nitrogen fixation by free-living bacteria nitrogen fixation; fixation of nitrogen nitrogen-fixing bacteria nitrogen-fixing microorganisms nitrogen flooding nitrogen-free extracts nitrogen in coal nitrogen inversion

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